# ISAVEBAK System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [I](Help%20System/GSTARCAD/2021/System%20Variables/I/(I).md) **Function Description:** The ISAVEBAK system variable is used to increase the speed of incremental saves, especially for large drawings. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | The ISAVEBAK system variable is used to control creation of bak files. **System Variable Value:** **0:** do not create BAK files (the same as fully save) **1:** create BAK files **Note:** in some situations(such as power failure when saving), some drawing date may missing. --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md) · [GstarCAD 2018](../../../2018/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md) · [GstarCAD 2020](../../../2020/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/I/ISAVEBAK%20System%20Variable--385d02197980.md)